The Speed of Light Changes When It Goes from Ethyl

Multiple Choice

The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46) .The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, v2/v1, is:

A) 1.99
B) 1.07
C) 0.932
D) 0.511
E) 0.760